Free laser engraving software. Without the busywork.
Every feature, every update and as many lasers as you own — for nothing. Run them all from one place, and when the work starts repeating, describe a batch in plain words: the built-in assistant builds the workflow for you.
- No account
- No card
- Not a trial
Only the optional AI assistant is paid: $3.99/month after a free month.
An animation of the workflow editor in GRBL Server.
Works with GRBL lasers from
…and any other laser that speaks GRBL. Brand names belong to their owners; GRBL Server isn't affiliated with them.
Everyday jobs
A simple job takes three screens.
Pick a design, place it on the bed and press Start — no workflows, no G-code.
Step 1 of 3 · Library
Pick your design
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The Library is a real folder in Documents. Keep designs in folders like Coasters or Signs and switch between them in one click.
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SVG, DXF, PNG, JPG and G-code files all show a thumbnail, so the right one is easy to spot. Double-click a file to start a job with it.
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Select a design and set how many copies you want. Four coasters means four on the bed, placed for you.
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New job opens your selection in Set up job. Engraving a one-off? Open it straight from your computer without adding it to the Library.
Step 2 of 3 · Set up job
Place it and choose the material
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Pick the laser and an engraving profile: the power, speed and fill for that material, chosen by name. Save the whole setup as a job template to repeat it later.
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The canvas is your laser’s work area in millimetres. Drag designs into place, and snap to grid keeps them tidy.
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Type a width, height or angle and the G-code matches it to the millimetre.
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Grid lines copies up in rows, Nesting packs odd shapes tight, and Crop/Clip fits a job to an offcut.
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Create job writes the G-code. It never starts the laser: you check everything on the next screen first.
Step 3 of 3 · Job Station
Check it, then press Start
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The preview draws the engraving and the travel moves to scale on your bed, before the laser moves at all.
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Jog the head into place, home or unlock the machine, and read its replies in the console.
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Buttons for air assist, going to the origin or anything else you send often, set up once.
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Tick the safety checks and the job runs. It stays on the Jobs page, ready to run again next time.
A replica of the GRBL Server app with demo designs.
Who it’s for
From your first design to your hundredth order.
One laser at home or a workshop full of them: start with a single job, and automate when the work starts repeating.
Hobbyists & makers
Engrave in a minute
Drop in an SVG, DXF, PNG or JPG, place it on the bed and press Start. Preview and frame it on the material first — no G-code needed.
How jobs work →Small laser businesses
Automate repeat orders
Workflows read your order database, cloud storage or Library, draw names and serial numbers, lay out the bed and mark orders done. Describe one and the assistant builds it.
Explore workflows →Workshops with several lasers
Run every laser from anywhere
Connect lasers over USB, Wi-Fi or Ethernet and run them side by side. Start, watch or pause any job from a browser on your network.
Connecting machines →Also built in
- Nesting
- Grids & fill the bed
- Crop & clip to offcuts
- Engraving profiles
- Job templates
- One-click macros
- Power curves
- Small-feature protection
- Gap protection
- Re-run any job
- G-code editor
- S3 cloud storage
- MySQL · PostgreSQL · SQLite
See it in action
Watch the introduction.
Rather watch than read? Here’s GRBL Server at work.
More tutorials on our YouTube channel →Questions, answered.
Is it really free?
Yes. GRBL Server costs nothing — every feature, every update and as many lasers as you like. It isn’t a trial and there’s no account or card to set up. The only paid part is optional: the AI assistant included with it, at $3.99/month after a free month, cancel anytime. Pricing →
Will it work with my laser?
If it speaks GRBL, yes: GRBL controllers over USB, and GRBL-ESP32 / FluidNC controllers over Wi-Fi or Ethernet. That covers lasers from ACMER, Atomstack, Creality Falcon, Ortur, Sculpfun, TwoTrees, xTool and many more. Connecting machines →
Does it run on a Mac?
GRBL Server installs on one Windows 10 or 11 computer — the one your lasers connect to. Once it’s running, any computer on your network can use it in a browser, Macs included.
Do I need workflows or the assistant?
No. For a one-off job you drop in a design, place it and press Start — no G-code needed. Workflows, job templates and the assistant are there for when you start repeating work.
What does the assistant cost and see?
The assistant included with GRBL Server is $3.99/month after a free month, with a monthly allowance and no key to set up. Or connect your own provider with your own key, at no charge from us: Anthropic, DeepSeek, any OpenAI-compatible API, even a local Ollama. It sees your request, the open workflow and the names of your templates, profiles, machines and folders — never your designs, passwords or keys. With a database set up it also sees table and column names, and rows only if you allow it.
Where are my files kept?
On your workshop computer, not in our cloud. The Library is a real folder in Documents, every job stays on the Jobs page ready to run again, and it all keeps working without internet — only the included assistant needs a connection.
Every feature, free.
Install it on your workshop PC, connect your laser and run your first job in minutes.
- No account or card
- Unlimited lasers
- Every update included
- Windows 10 & 11